zendesk-support: disable account_attributes, attribute_definitions, a…

…nd schedules streams

These streams were failing in production, so disabling them until we can figure
out a better solution.  Attributes are an enterprise feature that only applies
to certain customers. Apparently the connector can't figure that out and was
just erroring. Schedules returns 404 errors for some reason, and is just being
disabled because it's not actually critical to the current use case.

airbyte-integrations/connectors/source-zendesk-support/selected_streams.json

@@ -0,0 +1,24 @@
+["audit_logs",
+"brands",
+"custom_roles",
+"group_memberships",
+"groups",
+"macros",
+"organization_memberships",
+"organizations",
+"post_comment_votes",
+"post_comments",
+"post_votes",
+"posts",
+"satisfaction_ratings",
+"sla_policies",
+"tags",
+"ticket_audits",
+"ticket_comments",
+"ticket_fields",
+"ticket_forms",
+"ticket_metric_events",
+"ticket_metrics",
+"ticket_skips",
+"tickets",
+"users"]